JP2015056581A - Backboard mounting/dismounting jig, backboard attachable the same, server including backboard and method of changing backboard - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a backboard mounting/dismounting jig, a backboard attachable with the backboard mounting/dismounting jig, a server including backboard or a method of changing backboard capable of facilitating exchange of a backboard which is mounted with plural central processing units.SOLUTION: The backboard mounting/dismounting jig includes: a receiver frame which is set at the rear face side of the backboard being separated therefrom; plural pedestals which are provided on the bottom face of the receiver frame being in contact with the backboard; and plural holding rods which are provided to the side of the receiver frame so as contact to backboard frame formed around the periphery of the backboard to fix the receiver frame to the backboard.

Description

  TECHNICAL FIELD The present invention relates to a backboard detachment jig, and more particularly to a backboard detachment jig in which connectors are mounted on both sides of a base, a backboard to which the detachment jig can be attached, a server including the backboard, or a back The present invention relates to a board replacement method.

  Before the backboard is replaced, the system using this server is stopped by turning off the power of the entire server. In order to shorten the power stop time, it is required to speed up the backboard replacement work.

  Conventionally, when a server having a plurality of central processing units has failed, if the backboard is determined to be a suspected part, the backboard is replaced by the following procedure.

[How to remove]
First, a plurality of central processing units mounted on the backboard are turned off.
Next, the AC cable is removed from the backboard.
Next, the plurality of central processing units mounted on the backboard front surface are removed one by one from the backboard.
Next, the fan unit, router unit, server control unit, video unit, power supply unit, and blank cover mounted on the back of the backboard are removed from the backboard.
Next, slide the rear cage off the server (rack).
Finally, remove the backboard from the server.

[installation method]
First, the backboard is attached to the server.
Next, attach the rear cage to the server while sliding.
Next, the power supply unit, video unit, server control unit, router unit, fan unit, and blank cover on the back of the backboard are attached.
Finally, a plurality of central processing units are mounted one by one on the front surface of the backboard.

  Patent Document 1 proposes a removal jig for collecting a plurality of backboards at the same time and removing them from the server side.

Japanese Utility Model Publication No. 58-13377

  The following analysis is given by the present invention.

  According to the conventional backboard replacement method, before removing the backboard from the server, it is necessary to remove a plurality of central processing units one by one from the backboard so that the backboard does not bend. It takes time to remove the board. In addition, after attaching a new backboard to the server, it is necessary to mount multiple central processing units one by one on the backboard so that the backboard does not bend. Implementation may occur.

  Note that Patent Document 1 does not describe a central processing unit and its mounting on a backboard.

  Thus, a backboard demounting jig, a backboard to which the demounting jig can be attached, a server having the backboard, or a backboard for accelerating the replacement of the backboard mounted with a plurality of central processing units. An exchange method is required.

  In the first aspect, the backboard attaching / detaching jig includes a receiving frame that is set apart on the back side of the backboard, and a plurality of receiving tables that are provided on the bottom surface of the receiving frame and are in contact with the back surface of the backboard. And a plurality of pressing bars that are provided on a side portion of the receiving frame and fix the receiving frame to the backboard by contacting with a backboard frame formed around the backboard.

  In the second viewpoint, the detachable jig of the first viewpoint can be attached to the backboard.

  In the third viewpoint, the server includes a back board of the second viewpoint.

  In a fourth aspect, the backboard replacement method includes a step of attaching a backboard detachable jig to the server, sliding the detachable jig toward the back side of the backboard, and A step of bringing a plurality of pedestals provided on the bottom surface into contact with the back surface of the backboard; and a plurality of pressing bars provided on the sides of the receiving frame, the backboard frame formed around the backboard And attaching the detaching tool to the backboard frame, and removing both the detaching tool and the backboard from the server.

  A backboard demounting jig, a backboard to which the demounting jig can be attached, a server having the backboard, or a backboard replacing method that speeds up replacement of a backboard on which a plurality of central processing units are mounted Is provided.

FIG. 3 is a front view of the backboard according to the first embodiment. It is a rear view of the back board shown in FIG. It is a rear view of a server provided with the backboard shown in FIG. FIG. 4 is a top view of the server shown in FIG. 3. It is a longitudinal cross-sectional view (figure seen from the side) of the server shown in FIG. It is a figure which shows the positional relationship of the removal | desorption jig | tool which concerns on Embodiment 1, and the several central processing unit connector arrange | positioned in the backboard front surface shown in FIG. It is a figure which shows the positional relationship of the removal | desorption jig | tool shown in FIG. 6, and the other connector arrange | positioned at the backboard back surface shown in FIG. FIG. 7 is a front view of the detaching jig shown in FIG. 6. FIG. 7 is a rear view of the attaching / detaching jig shown in FIG. 6. It is sectional drawing which shows the state which attached the removal | desorption jig | tool shown in FIG. 6 to the back board shown in FIG. It is a flowchart explaining the outline | summary of the backboard exchange method which concerns on embodiment. It is a flowchart explaining the backboard replacement | exchange method which concerns on a comparative example. FIG. 13 is a flowchart for explaining a backboard replacement method according to a comparative example, following FIG. 12; It is a flowchart explaining the detail of the backboard replacement | exchange method which concerns on embodiment shown in FIG. FIG. 15 is a flowchart illustrating a backboard replacement method according to the embodiment, following FIG. 14.

  Form 1 is as described in the first viewpoint.

  In aspect 2, the height of the plurality of cradles is higher than the height of the plurality of connectors mounted on the back surface of the backboard.

  In the third aspect, the plurality of pressing bars are in contact with the side surface of the backboard frame.

  In the fourth aspect, the plurality of pressing bars are disposed so as to be opposed to the upper, lower, left and right side surfaces of the backboard frame.

  In form 5, a plurality of central processing units are mounted on the front surface of the backboard.

  In Mode 6, the plurality of connectors mounted on the front surface of the backboard and into which the plurality of central processing units are inserted protrude from the receiving frame by an insertion depth of the plurality of central processing units with respect to the plurality of connectors. Yes.

  In form 7, the front ends of the plurality of cradles are insulative.

  Form 8 is as described in the second viewpoint.

  Form 9 is as described in the third viewpoint.

  Form 10 is as described in the fourth viewpoint.

  An outline of an embodiment of the present invention will be described with reference to the drawings. Note that the reference numerals of the drawings attached to this summary are attached to the respective elements for convenience as an example for facilitating understanding, and are not intended to limit the present invention to the illustrated embodiment.

  The detaching jig 200 shown in FIG. 8 or 10 is particularly suitable for exchanging the backboard 100 on which a plurality of central processing units 1a and the like (see FIG. 1) are mounted on the front surface. Referring to FIG. 10, the attaching / detaching jig 200 for the backboard 100 is provided with a receiving frame 201 that is set apart on the back side of the backboard 100, and a plurality of pieces that are in contact with the back surface of the backboard 100. A plurality of pressing rods 216 that fix the receiving frame 201 to the backboard 100 by contacting with the backboard frame 101 formed around the backboard 100. It has.

  Referring to FIG. 14, the method for replacing the backboard 100 using the detachable jig 200 includes a step (step D1) of attaching the detachable jig 200 of the backboard 100 to the server 1 (see FIG. 5), and a detachable jig. A step of sliding 200 toward the back side of the backboard 100 and bringing a plurality of cradles 202 provided on the bottom surface of the receiving frame 201 of the detachment jig 200 into contact with the back surface of the backboard 100 (step D2); A step of bringing a plurality of pressing bars 216 to 223 provided on the side of the receiving frame 201 into contact with the backboard frame 101 formed around the backboard 100 and fixing the detaching tool 200 to the backboard frame 101 (step) D3), and the process (step D4) which removes both the removal tool 200 and the back board 100 from the server 1. When the removal tool 200 and the backboard 100 are collectively removed from the server 1, simultaneously with the removal, a plurality of central processing units supported on the server 1 side can be removed from the backboard 100 all at once.

  When the backboard 100 is replaced, the attachment / detachment jig 200 is attached to the backboard 100, thereby increasing the rigidity of the backboard 100 and reducing the bending of the backboard 100 when the backboard 100 is removed. For this reason, simultaneously with the removal of the backboard 100, a plurality of central processing units 1a and the like can be removed from the backboard 100 all at once. In addition, when a plurality of central processing units 1a are mounted on the new backboard 100, a plurality of central processing units 1a and the like can be connected all at once, so that it does not take time to confirm the connection, and an error occurs. Mounting is also prevented. Thus, the replacement of the backboard 100 on which the plurality of central processing units 1a are mounted is expedited.

  Further, the detachment jig 200 supports the detachment jig and the front surface of the backboard 100 by supporting the backboard from the back surface and the side surface of the backboard 100 with a plurality of receiving bases 202 and the like and a plurality of pressing bars 216 and the like. The attachment / detachment jig 200 can be reliably attached to the backboard 100 without interfering with the plurality of central processing units 1a and the like that are mounted. In addition, the height of the plurality of cradles 202 is set according to the height of the connector mounted on the back surface of the backboard 100, so that the mounting / dismounting jig 200 and the backboard 100 are mounted on the back surface. Interference with the connector is also prevented.

  In order for the detachment jig 200 to press (fix) the backboard frame 101, the presser bar 216 or the like is firmly fixed to the receiving frame 201 and does not move (is not displaced), that is, the contact surface of the presser bar 216 or the like. Is desired not to slip on the contacted surface on the backboard frame 101. Further, it is desirable that the presser bar 216 and the like can be fitted into the receiving frame 201 and cannot be easily removed. Therefore, it is desirable that the material of the presser bar 216, particularly the material of the contact surface thereof, is an elastic body such as rubber or resin. In addition, a threaded portion may be formed in the receiving frame 201, a screw that is screw-coupled to the threaded portion may be used for the presser bar 216, and an elastic body such as rubber or resin may be applied to the screw tip. The backboard frame 101 can be pressed by screwing the pressing bar 216 or the like. The material of the screw at this time is not particularly limited. Alternatively, a method of pressing the presser bar 216 with a spring force may be used.

  Next, an embodiment of the present invention will be described in detail with reference to the drawings. In the following description, many specific items are made for the purpose of explanation and to help understanding of the present invention.

Embodiment 1

  Referring to FIG. 4, the server 1 includes a backboard 100. Referring to FIG. 6, a plurality of connectors 102 to 117 are provided on the front surface of the backboard 100. Referring to FIG. 7, a plurality of connectors 118 to 143 are provided on the back surface of the backboard 100. Referring to FIG. 6 or FIG. 7, for example, a metal backboard frame 101 is provided on the outer periphery of the backboard 100. The backboard frame 101 increases the rigidity of the backboard. The backboard 100 is fixed to the server 1 by a plurality of screws 144 to 153 shown in FIG.

  1 and 5, a plurality of central processing units 1a to 1p are mounted on the front surface of the backboard 100 via a plurality of connectors 102 to 117 shown in FIG. Has been. The LCD unit 2 displays the states of the plurality of central processing units 1a to 1p.

  Referring to FIGS. 2 and 5, a plurality of fan units 3 a to 3 h, a plurality of router units 4 a to 4 h, and a plurality of controls are provided on the back surface of the backboard 100 via a plurality of connectors 118 to 143 shown in FIG. 7. The parts 5a and 5b, the video part 6, the plurality of power supply parts 7a to 7f, and the plurality of blank covers 8a and 8b are mounted.

  The plurality of fan units 3a to 3h, the plurality of router units 4a to 4h, and the plurality of control units 5a and 5b have a redundant function. Thereby, for example, even when one fan unit 3a fails, the server 1 can be operated without stopping the operations of the plurality of central processing units 1a to 1p.

  The plurality of router units 4a to 4h have a network function of the plurality of central processing units 1a to 1p. The router unit 4a is for the central processing units 1a and 1b, the router unit 4b is for the central processing units 1c and 1d, the router unit 4c is for the central processing units 1e and 1f, and the router unit 4d is the central processing units 1g and 1h. The router unit 4e is for the central processing units 1i and 1j, the router unit 4f is for the central processing units 1k and 1l, the router unit 4g is for the central processing units 1m and 1n, and the router unit 4h is the central processing unit 1o. 1p.

  In addition, the some control part 5a, 5b has a function which controls each movement of the some central processing unit 1a-1p. The plurality of control units 5a and 5b also have a redundancy function, and the two control units 5a and 5b are always synchronized.

  Note that a port for connecting a display device such as a CRT or LCD can be mounted on the video unit 6, and an input / output device such as a keyboard and a mouse can be connected to the video unit 6.

  Note that the blank covers 8a and 8b are hollow when the covers are removed, whereby the temperature in the server 1 is properly maintained and the air conditioning of the entire server 1 is adjusted.

  Referring to FIG. 3, a rear cage 9 is provided on the back of the server 1, and handles 10 and 11 are provided on the left and right sides of the rear cage 9.

  With reference to FIGS. 8 and 9, the detachment jig 200 for the backboard 100 is provided on the bottom surface of the receiving frame 201 and the receiving frame 201 that is set apart from the back side of the backboard 100. A plurality of holders 202 to 208 in contact with the back surface, and a plurality of pressers that are provided on the side of the receiving frame 201 and fix the receiving frame 201 to the backboard 100 by contacting the backboard frame 101 formed around the backboard 100. Rods 216 to 223. The receiving frame 201 does not come into direct contact with the backboard 100, but a high rigidity is desired in order to reliably support the backboard 100 so as not to bend. Further, referring to FIG. 3, the detaching jig 200 or the receiving frame 201 can be attached to a rack side member for storing the server 1, for example, the handles 10 and 11.

  The detaching jig 200 is made of metal. Compared with the rear cage 9 of FIG. 3, there are gaps in the upper and lower portions of the detachment jig 200 that allow the backboard frame pressing bars 216 to 223 to be moved. The left and right dimensions of the detaching jig 200 are the same as those of the rear cage 9.

  The backboard receiving frame 201 has the same dimensions as the backboard frame 101 and serves as a stand for receiving the backboard frame.

  The heights 215 of the plurality of receiving bases 202 to 208 are set higher than the heights of the plurality of connectors 118 to 143 mounted on the back surface of the backboard 100. This prevents interference between the receiving frame 201 and the plurality of connectors 118 to 143 when the attachment / detachment jig 200 is attached to the backboard 100. The plurality of cradles 202 to 208 do not overlap with the plurality of connectors 118 to 143 mounted on the back surface of the back board 100 on the front surface of the receiving frame facing the back surface of the back board 100 and on the back surface. Arranged so as not to damage the circuit pattern. The tips of the plurality of cradles 202 to 208 are insulative. The contact portions of the backboard cradle 202 to 208 with the backboard 100 are covered with an insulating rubber 214 to prevent static electricity generation and damage due to contact with the backboard 100.

  The plurality of pressing bars 216 to 223 are operated when the detachment jig 200 is detachably attached to the backboard 100. The plurality of pressing bars 216 to 223 can be in contact with the side surface of the backboard frame 101. The plurality of pressing bars 216 to 223 are arranged to be able to face the upper, lower, left and right side surfaces of the backboard frame 101.

  The plurality of presser bars 216 to 223 are formed so that the two surfaces of the corners are in contact with the backboard frame 101. In the drawing, the plurality of pressing bars 216 to 223 are cylinders, but may be rectangular parallelepipeds or other shapes. In the drawing, a plurality of pressing rods 216 to 223 are provided. However, any number can be used as long as the load applied to the backboard 100 can be equalized when the backboard 100 is taken out from the server 1. good.

  The detachment jig 200 includes a guided portion that is provided on the outer periphery of the receiving frame 201 and is slidably attached to the handles 10 and 11 provided in the server 1 having the backboard 101.

  Further, the detaching jig 200 has jig handles 209 to 212. The jig handles 209 to 212 are used when the attachment / detachment jig 200 attached to the backboard 100 is attached to / detached from the server 1.

With reference to FIG. 10, the attachment state with respect to the backboard 100 of the removal | desorption jig | tool 200 is demonstrated. The plurality of connectors 102 to 117 mounted on the front surface of the backboard 100 protrude from the receiving frame 201 with a step (projection dimension) 213. The step 213 is set to have the same value as the insertion depth (mounting depth) of the central processing units 1a to 1p.
That is, the plurality of connectors 102 to 117 protrude from the receiving frame 201 by the insertion depth of the plurality of connectors 102 to 117 of the plurality of central processing units 1 a to 1 p.

  Next, a backboard replacement method using the attaching / detaching jig 200 will be described. First, with reference to FIG. 11, the entire flow from the occurrence of a failure to the replacement of the backboard 100 when the failure of the server 1 occurs will be described.

  When a failure occurs in the server 1 (step A1), the maintenance staff diagnoses the server 1 and identifies the failure location (step A2). If it is determined that the backboard 100 is out of order (step A3), the maintenance staff replaces the backboard 100 using the attachment / detachment jig 200 (step A4) and confirms the normality of the server 1. (Step A5).

  A method for replacing the backboard using the detaching jig 200 will be described in detail. First, the replacement method according to the comparative example will be described.

[Comparative example]
Referring to FIG. 12, the plurality of central processing units 1a to 1p are turned off, and the AC cables mounted on the power supply units 7a to 7f are disconnected (step B1).

  The plurality of central processing units 1a to 1p are removed one by one from the backboard 100 (step B0).

  The fan portions 3a to 3h are removed from the back surface of the backboard 100 while holding the handle (step B2). The router units 4a to 4h are removed from the back surface of the backboard 100 while paying attention to the network connector unit (step B3). The control units 5a and 5b, the video unit 6, the power supply units 7a to 7f and the blank covers 8a and 8b of the server 1 are removed from the back surface of the backboard 100 (steps B4 to B7).

  The rear cage 9 is removed from the server 1 (step B8). The backboard 100 is removed from the server 1 (step B9).

  Referring to FIG. 13, a new backboard 100 is attached to server 1, and then rear cage 9 is attached (steps C1 and C2).

  Blank covers 8a and 8b, fan sections 3a to 3h, router sections 4a to 4h, control sections 5a and 5b, video section 6 and power supply sections 7a to 7f are attached to server 1 (steps C3 to C8).

  A plurality of central processing units 1a to 1p are attached to the front surface of the backboard 100 one by one (step C0).

  According to the replacement method of the backboard 100 according to the comparative example, before removing the backboard 100 from the server 1, a plurality of central processing units 1 a to 1 p mounted on the front surface of the backboard 100 are connected to the backboard 100. Since the process of removing the sheets one by one (see step B0) is required, it takes time to remove the backboard 100. In addition, since the plurality of central processing units 1a to 1p are attached to the new backboard 100 one by one, there is a risk that it takes time to check the connection and erroneous mounting may occur. These reasons are because the backboard 100 has low rigidity.

  Next, a method for replacing the backboard 100 using the attaching / detaching jig 200 according to the embodiment will be described.

  In the exchange method according to the embodiment, steps B1 and B2 to B8 in FIG. 12 are executed as the previous step. That is, in the exchange method according to the embodiment, there is no step B0 in FIG.

  Next, referring to FIG. 14, the maintenance staff attaches the detaching jig 200 to the server 1 (step D1). The server 1 has handles 10 and 11 on the left and right sides, and the maintenance person hangs the attachment / detachment jig 200 on the handles 10 and 11 and slides the attachment / detachment jig 200 until it hits the backboard frame 101 while holding the jig handles 209 to 212. There are two ways of holding the jig handles 209 to 212: the jig handle 209 and the jig handle 212, or the jig handle 210 and the jig handle 211. Let

  Next, the maintenance staff attaches the detachment jig 200 to the backboard frame 201 (step D2). That is, the maintenance staff inserts the backboard pressing rods 216 to 223 until the backboard pressing rods 216 to 223 come into contact with the backboard frame 201, and the removal jig 200 is inserted into the backboard frame 201 via the backboard pressing rods 216 to 223 and the backboard frame 201. Attach to. The detachment jig 200 supports the backboard 100 from the back and side surfaces of the backboard 100 by a plurality of receiving bases 202 and the like, and a plurality of pressing bars 217 and the like.

  Next, the maintenance staff slides the detachment jig 200 integrated with the backboard 100 while holding the jig handle 209 and the like, and removes the backboard 100 together with the detachment jig 200 from the server 1 (step D3). . The jig handle 209 may be held in the same way as in step D2.

  Finally, the maintenance staff removes the screws 144 to 153 and removes the backboard frame 101 from the backboard 100 (step D4).

  Then, the attachment process of the new backboard 100 using the removal | desorption jig | tool 200 is demonstrated. Referring to FIG. 15, backboard frame 101 is attached to backboard 100 using screws 144 to 153 (step E1).

  As in step D2, the maintenance staff attaches the detachment jig 200 to the backboard frame 201 (step E2).

  The maintenance staff hangs the desorption jig 200 on the handles 10 and 11 and slides the backboard 100 attached to the desorption jig 200 to a predetermined position in the server 1 while holding the jig handles 209 to 212. As a result, a plurality of central processing units supported on the server 1 side, for example, a chassis installed between the plurality of central processing units 1a to 1p, are connected to the plurality of connectors 102 to 117 mounted on the front surface of the backboard 100. The processing devices 1a to 1p are connected together at a time (step E3).

  The insertion state of the plurality of central processing units 1a to 1p is set by the plurality of connectors 102 to 117 and the step 213 on the surface of the attachment / detachment jig 200 shown in FIG. 10, so that the attachment / detachment jig 200 cannot slide. Is the optimum insertion depth.

  Finally, the maintenance staff pulls the backboard pressing rods 216 to 223 toward the outside of the detachment jig 200, separates the backboard pressing rods 216 to 223 from the backboard frame 101, and slides the detachment jig 200 to make the server 1 (Step E4).

  According to the replacement method according to the embodiment, it is possible to speed up maintenance and replacement work of the backboard 100 and reduce the risk of erroneous mounting of the mounting module mounted on the backboard 100. Further, when the backboard 100 is mounted using the detachable jig 200, the degree of fitting of the plurality of central processing units 1a to 1p and the plurality of connectors 102 to 117 can be optimized. It is possible to prevent problems that the central processing unit 1a and the like cannot be recognized due to breakage of the processing units 1a to 1p or the plurality of connectors 102 to 117, or contact failure due to poor fitting, and uniform work quality can be achieved. .

  Although one embodiment of the present invention has been described above, the present invention is not limited to the above-described one embodiment and the like, and further modifications, within the scope not departing from the basic technical idea of the present invention, Substitutions or adjustments can be made. The disclosure of the above patent document is incorporated herein by reference. Within the scope of the entire disclosure (including claims) of the present invention, the embodiments and examples can be changed and adjusted based on the basic technical concept. Further, various combinations or selections of various disclosed elements (including each element of each claim, each element of each embodiment or example, each element of each drawing, etc.) within the scope of the claims of the present invention. Is possible. That is, the present invention of course includes various variations and modifications that could be made by those skilled in the art according to the entire disclosure including the claims and the technical idea.

1 server 1a-1p central processing unit 2 LCD
3a-3h Fan unit 4a-4h Router unit 5a-5b Control unit 6 Video unit 7a-7f Power supply unit 8a-8b Blank cover 9: Rear cage 10, 11 Handle 100 Backboard 101 Backboard frame 102-117 For central processing unit Connectors 118 to 125 Connectors 126 to 133 for the fan section Connectors 134 to 135 for the router section Connectors 136 to 137 for the control section Connectors 138 to 143 for the video section 144 to 153 for the power section Screws 200 Desorption jig 201 Backboard receiving frame 202-208 Backboard receiving frame 209-212 Jig handle 213 Step 214 Insulating rubber 215 Backboard receiving height 216-223 Backboard frame holding rod

Claims (10)

A receiving frame set apart on the back side of the backboard;
A plurality of pedestals provided on the bottom surface of the receiving frame and in contact with the back surface of the backboard;
A plurality of pressing bars that are provided on the side of the receiving frame and fix the receiving frame to the backboard by contacting a backboard frame formed around the backboard;
A backboard attaching / detaching jig characterized by comprising:   2. The attachment / detachment jig according to claim 1, wherein heights of the plurality of cradles are higher than heights of the plurality of connectors mounted on the back surface of the backboard.   The attachment / detachment jig according to claim 1, wherein the plurality of pressing bars are in contact with a side surface of the backboard frame.   The attachment / detachment jig according to any one of claims 1 to 3, wherein the plurality of pressing bars are arranged to be opposed to the upper, lower, left, and right side surfaces of the backboard frame.   The detachment jig according to any one of claims 1 to 4, wherein a plurality of central processing units are mounted on the front surface of the backboard.   A plurality of connectors mounted on the front surface of the backboard and into which the plurality of central processing units are inserted protrude from the receiving frame by an insertion depth of the plurality of central processing units with respect to the plurality of connectors. The detachable jig according to any one of claims 1 to 5.   The attachment / detachment jig according to claim 1, wherein tips of the plurality of cradles are insulative.   A backboard to which the detachable jig according to claim 1 can be attached.   A server comprising the backboard according to claim 8. Attaching the backboard removal tool to the server;
Sliding the desorption jig toward the back side of the backboard, and bringing a plurality of pedestals provided on the bottom surface of the receiving frame of the desorption jig into contact with the back surface of the backboard;
A step of bringing a plurality of pressing bars provided on the side of the receiving frame into contact with a backboard frame formed around the backboard, and fixing the detachable tool to the backboard frame;
Removing both the removal tool and the backboard from the server;
Including backboard replacement method.

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